西安电子科技大学学报(自然科学版)
西安電子科技大學學報(自然科學版)
서안전자과기대학학보(자연과학판)
JOURNAL OF XIDIAN UNIVERSITY(NATURAL SCIENCE)
2010年
2期
340-345,358
,共7页
有源噪声控制%自适应滤波器%自适应相位补偿%严格正实数条件
有源譟聲控製%自適應濾波器%自適應相位補償%嚴格正實數條件
유원조성공제%자괄응려파기%자괄응상위보상%엄격정실수조건
active noise control%adaptive filter%adaptive phase compensation%strict positive real
多数有源噪声控制算法效果依赖于次级通道模型,不仅增加了算法的复杂度,也引入了稳定性等问题.基于滤波-XLMS算法的严格正实数(SPR)条件,通过引入一套自动相位补偿机制,提出了一种无需次级通道模型的噪声控制算法.仿真结果表明,与现有的类似算法相比,该算法能自动对次级通道的相位偏移进行补偿,不管输入噪声频率如何,该算法都能有效收敛.
多數有源譟聲控製算法效果依賴于次級通道模型,不僅增加瞭算法的複雜度,也引入瞭穩定性等問題.基于濾波-XLMS算法的嚴格正實數(SPR)條件,通過引入一套自動相位補償機製,提齣瞭一種無需次級通道模型的譟聲控製算法.倣真結果錶明,與現有的類似算法相比,該算法能自動對次級通道的相位偏移進行補償,不管輸入譟聲頻率如何,該算法都能有效收斂.
다수유원조성공제산법효과의뢰우차급통도모형,불부증가료산법적복잡도,야인입료은정성등문제.기우려파-XLMS산법적엄격정실수(SPR)조건,통과인입일투자동상위보상궤제,제출료일충무수차급통도모형적조성공제산법.방진결과표명,여현유적유사산법상비,해산법능자동대차급통도적상위편이진행보상,불관수입조성빈솔여하,해산법도능유효수렴.
The effects of most active noise control algorithms rely on the identification of the secondary path,which usually leads to increased complexity as well as stability problems.Based on the strict positive real (SPR) property of the filtered-x LMS algorithm,a new ANC algorithm requiring no secondary path identification is proposed by introducing a phase compensating mechanism.Simulation results show that this algorithm can automatically find the right compensating phase of the secondary path and will always converge regardless of the noise frequency,compared with the existing method.